.thumbnail {
	position:relative;
	overflow:hidden;
}
 
.caption {
	position:absolute;
	top:0;
	right:0;
	background:rgba(0, 0, 0, 0.6);
	width:100%;
	height:100%;
	padding:2%;
	display: none;
	text-align:center;
	color:#fff !important;
	z-index:2;
}